JPH05363Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a paper discharge device for a card printing machine that prints cards such as prepaid cards and cash cards.

[Conventional technology] Conventionally, in printing machines for sheet-fed sheets, when ejecting a sheet after printing, the periphery of the sheet, that is, the unprinted part, is removed using a paper-ejecting claw or the like. I grasp it and do it.

However, for items with printing on the entire surface, such as cards, you will have to grip the printed side.
The paper ejection structure described above cannot be adopted.

Therefore, when printing the entire surface of a card, a rotary type printing machine is used, and the card to be printed is fed between the plate cylinder and the press cylinder to print the entire surface, and the card is fed out from between the plate cylinder and the press cylinder. A method is adopted in which the printed cards are guided onto a conveyor and guided to a drying process.

However, the above-mentioned card printing machine has the disadvantage that if the card used as the printing medium is relatively flexible, the card after printing tends to wrap around the plate cylinder, making it impossible to eject the card.

[The problem that the invention attempts to solve]

This invention has been made with the above-mentioned points in mind, and is intended to provide a paper ejecting device that is effective for ejecting cards printed on the entire surface.

[Means for solving problems]

Next, the configuration of this invention will be explained using FIG. 1, FIG. 4, and FIG. 6, which correspond to embodiments.

The paper discharge device of the card printing machine according to this invention includes a printing surface plate 8 that sequentially moves the paper feeding position, printing position, and paper discharge position of the card 19, and a printing surface plate 8 formed on the upper surface of the printing surface plate 8. A suction port 17 that sucks and holds the card 19 which is evacuated and placed on the printing platen 8 through an air passage 18 inside, an air valve 22 interposed in the air passage 18, and a The air valve 22 of the printing surface plate 8 is operated by a push-up pin 25 which is provided on the upper surface of the platen 8 and is biased to the retracted state, and a first air cylinder 39 which is provided at the paper discharge position to close the air valve 22 of the printing platen 8. At the same time, the card 19 pushed up by the push-up pin 25 is scraped out from the printing surface plate 8 by operating an operating body 40 that operates the push-up pin 25 to the extended state and a second air cylinder 43 provided at the paper discharge position. It is equipped with a paper discharge claw 45.

[Effect]

To explain the operation of the means, when the card 19 is placed on the printing platen 8 at the paper feeding position,
This is held securely by vacuuming at the suction port 17, and then the printing platen 8 is moved to the printing position, and the card 19 on the printing platen 8 is printed.

Next, after printing the card 19, print plate 8
When the card 19 reaches the paper ejection position, the first air cylinder 39 is activated, the air valve 22 of the printing surface plate 8 is closed by the operating body 40, and the suction and holding operations of the card 19 are stopped. The push-up pin 25 is pushed up from the upper surface of the printing surface plate 8 by the operating body 40, and the card 19 is lifted up.

Furthermore, the second air cylinder 43 is activated, and the paper ejection claw 45 comes into contact with the edge of the card 19 that has been lifted up and scrapes it out.
is discharged.

Therefore, even if the entire surface of the card 19 is printed, the card 19 can be reliably ejected without damaging the printed surface of the card 19.

〔Example〕

Next, this invention will be explained in detail with reference to drawings showing one embodiment thereof.

The example is a case of a five-color card printing machine,
First, Figures 2 and 3 show the overall configuration of a card printing machine, with 1 being a pair of main body frames, 2 being an ink cartridge divided into five colors provided at the rear between both frames 1 It is a device, an inkwell, a meat stick,
It consists of an ink calling roller, a horizontal shaking roller, and a kneading roller, and each roller has a groove formed to prevent mixing of ink due to horizontal shaking. Reference numeral 3 denotes a motor for driving each roller of the inking device 2.

Reference numeral 4 denotes a plate surface plate provided in the center between the frames 1, on which five plates 5 for each color are fixed side by side in correspondence with the inking device 2 for each color.
Fine adjustment of the plate register is performed by a plate vise 6 that fixes each plate 5.

7 is located on the front side between frame 1 and has multiple pieces (16
This printing plate device is made up of printing plates 8 connected in a ring, and each printing plate 8 runs on an annular rail 9 with a concave cross section. Five printing plates 8 are lined up facing each plate 5, and each printing plate 8 is intermittently fed counterclockwise by an air cylinder (not shown) at the arrangement interval of each plate 5.

As shown in FIG. 4 and FIG.
A pair of cam followers 13 are supported by the lower surface of the pedestal 10 and fit into the grooves of the rail 9, and a receiving roller 14 is supported by the air unit 11 and rolls into contact with the lower surface of the rail 9. As a result, it is configured to run smoothly along the rail 9, and a pin 15 for feeding and positioning located outside the rail 9 is supported on the lower surface of the pedestal 10.

Further, a cradle 10 is provided on the bottom surface of the card holder 12.
A recessed part forming a vacuum chamber 16 is provided between the holder 12 and a large number of suction ports 17 communicating with the vacuum chamber 16 on the upper surface of the holder 12. By drawing a vacuum through an air passage 18 formed in the card 10 and the air unit 11, the card 19 placed on the holder 12 is suctioned and held through the suction port 17.

Here, a joint piece 20 having two air hose connection ports is attached to the end of the air passage 18 of the air unit 11, and the air hoses are connected between the connection ports of the respective joint pieces 20 of the adjacent printing surface plates 8. 2
1, and an arbitrary connecting piece 20 is connected to a vacuum device (not shown) via an air hose, and the vacuum chamber 16 of each printing surface plate 8 can be evacuated by driving the vacuum device. It's summery.

Further, each air unit 11 of each printing platen 8 has an air valve 2 for opening and closing the air passage 18.
2 is interposed. As shown in FIG. 5, this air valve 22 can be held in two positions, open and closed, by a doggle device 24 using a coil spring 23.

Further, as shown in FIG. 6, each printing surface plate 8 is provided with a pair of vertical push-up pins 25 so as to pass through the pedestal 10 and the holder 12, and the upper ends of both pins 25 are The pins 25 protrude and retract from the upper surface of the holder 12 so that the end of the card 19 can be pushed up, and both pins 25 are biased by compression coil springs 26 to retract from the upper surface of the holder 12. .

The spring holder in the middle of this push-up pin 25 holds the spring 26 between the upper inner surface of the vacuum chamber 16, but when the pin 25 is in the retracted state, it has the function of closing the through hole of the pin 25 in the pedestal 10. and
This prevents the degree of vacuum in the vacuum chamber 16 from decreasing.

Note that even if a gap occurs between the through hole of the pin 26 in the holder 12 and the pin 26, this through hole functions in the same way as the suction port 17, and there is no problem.

27 is a printing positioning device, which has five pin receivers 28 corresponding to each plate 5;
By moving the device 27 by 9, each plate 5
Each pin receiver 28 engages with each pin 15 of the five printing plates 8 at the printing position facing the plate 5.
and each of the five printing plates 8 are positioned so as to accurately face each other.

Reference numeral 30 denotes a paper feeding device provided at the paper feeding position of the cards 19, and the paper feeding position of the cards 19 stacked on the supply table 31 can be freely adjusted by front and rear, left and right guide plates 32 and 33. and
The cards 19 in the uppermost layer are sequentially fed onto the printing surface plate 8 by the feeder 34.

When the card 19 is supplied, the pin receiver 37 of the supply positioning device 36 moved by the air cylinder 35 engages with the pin 15 of the printing platen 8, and the printing platen 8 is positioned.

Reference numeral 38 denotes a paper ejecting device provided at the paper ejecting position of the card 19, which is connected to the air cutting mechanism shown in FIG.
It is constituted by the card ejecting mechanism section shown in FIGS. 7 and 8.

This air cutting mechanism section consists of a first air cylinder 39 provided vertically below the paper ejection position, and a substantially U-shaped operating body 40 attached to the upper end of the piston rod of the cylinder 39. The operation piece 40a on one side of the operation body 40 faces the air valve 22 and one push-up pin 25 of the printing platen 8 at the paper discharge position, and the operation piece 40b on the other side faces the other push-up pin 25 of the printing platen 8 at the paper discharge position. It faces pin 25.

Therefore, when the piston rod 39 is extended by the operation of the air cylinder 39, the operating body 40 moves upward as shown by the two-dot chain line in FIG.
0a pushes up the cutting pin 22a of the air valve 22 to close the air valve 22, pushes up one push-up pin 25, and closes the operating piece 4 on the other side.
0b pushes up the other push-up pin 25.

As a result, the card 19, which has been released from the suction state by closing the air valve 22, is lifted up as shown by the two-dot chain line in the same figure as both pins 25 are pushed up.

Further, the card ejection mechanism section includes a paper ejection guide 42 in the front and rear direction fixed to the front guide receiver 41 near the paper ejection position, a second air cylinder 43 supported by the guide 42, and a second air cylinder 43 supported by the guide 42. It consists of a slider 44 connected to the tip of a piston rod and movable back and forth along a guide 42, and as shown in FIG.
and the adjacent printing surface plate 8, while the slider 44 is located approximately at L as shown in FIG.
A paper ejection claw 45 is fixed to the lower tip of the slider 44 and located directly above the printing surface plate 8 at the paper ejection position.

Here, as is clear from FIG. 7, the paper ejection claw 4
5 is located between a pair of pins 25 of the printing surface plate 8. Therefore, the card 19 pushed up by the operation of the air cutting mechanism operates the second air cylinder 43 and moves the card 19 onto the slider. By sliding the sheet 44 forward, the sheet is scraped forward by the sheet ejection claw 45 and ejected from the printing platen 8.

Card 1 ejected by this paper ejecting device 38
The sheets 9 are guided to a discharge conveyor in front of the sheet discharge position and to a drying device 46, and are dried by hot air drying, UV or infrared drying, or the like.

Although not shown, the paper feeding device 30 is provided with an operating body that is operated in the vertical direction by an air cylinder, and when the printing platen 8 reaches the paper feeding position, the operating body opens an air valve. 22 use pin 22b is pushed upward and the valve 22
is opened, the vacuum chamber 16 is evacuated,
The card 19 placed on the printing platen 8 is sucked and held by the paper feeding device 30.

Then, at the paper feed position of the card 19, the air valve 2
Since the air valve 22 of the printing surface plate 8 with the opening 2 is held open until it reaches the paper ejection position,
During this time, the card 19 is held securely by vacuuming, and when the card 19 is ejected at the paper ejection position, the suction port 17 on the printing surface plate 8 opens, but the air valve is closed from the paper ejection position to the paper feed position. 22 is kept closed, a decrease in the degree of vacuum is avoided.

47 is a printing unit, and between a pair of unit frames 47' there is an inking roller group 48 consisting of a form roller, a horizontal swing roller, and a kneading roller.
and a blanket cylinder 49, and the unit frame 47 moves on a pair of rails 50 fixed to the main body frame 1.

51 is a main motor, 52 is an enlarged crank that is rotated at a reduced speed by the motor 51, and 53 is a swing arm that is swing-operated by the enlarged crank 52.
Its free end is connected to the unit 47, and by driving the motor 51, the unit 47 reciprocates between the inking device 2 and the printing platen device 7.

Next, the operation of the above embodiment will be explained.

As described above, when the main motor 51 is driven, the printing unit 47 reciprocates between the inking device 2 and the printing platen device 7. During this reciprocating movement, the forming roller of the unit 47 moves back and forth between the inking device 2 and the printing platen device 7. The blanket cylinder 49 moves between the plate plate 4 and the printing plate device 7.

On the other hand, each printing platen 8 is intermittently fed by an air cylinder in synchronization with the reciprocating movement of the printing unit 47, that is, each time the printing unit 47 moves toward the inking device 2, and
7 moves from the inking device 2 to the printing platen device 7, at this timing the air cylinder 29
As a result, the positioning device 27 is activated, and each printing surface plate 8 is positioned at a printing position facing each plate 5 during printing.

Therefore, the card on the printing surface plate 8, which has been printed for the first time (first color) by one round trip of the printing unit 47, is intermittently fed and printed for the second time (second color), and as follows. Similarly, each of the five colors is printed in sequence.

Further, the feeding of the card 19 in the paper feeding device 30 is performed at the timing when the printing unit 47 moves to the printing platen device 7, and at the same time as the operation of the printing position positioning device 27 by the air cylinder 29.
A paper feed position positioning device 36 is activated by the air cylinder 35, and the card 19 is positioned when being fed.

Furthermore, the ejection of the card 19 by the paper ejecting device 38 is also performed at this timing, and the card 19 that has finished overprinting in five colors is pushed up by the operation of the pin 25 by the first air cylinder 39, and the card 19 is pushed up by the operation of the pin 25 by the first air cylinder 39. 43 and is scraped out by the operation of the paper ejection claw 45, and guided to the drying process.

[Effect of idea]

As described above, according to the paper ejecting device of the card printing machine of this invention, when the card sucked and held on the printing surface plate reaches the paper ejection position from the printing position, the push-up pin of this printing surface plate moves to the first position. This is because the card on the printing platen is pushed up by the actuation of the operating body by the air cylinder, and the lifted card is scraped out by the ejection claw operated by the second air cylinder and can be ejected. ,
Even if the card is printed on the entire surface and there is no part to grip around the periphery, the card can be smoothly ejected without damaging the printed surface.

[Brief explanation of drawings]

The drawing shows one of the paper ejection devices of the card printing machine of this invention.
An embodiment is shown in which FIG. 1 is a cross-sectional side view showing a card ejecting mechanism section of a paper ejecting device, FIGS. 2 and 3 are a plan view and a side view showing the overall configuration of a card printing machine,
4 and 5 are a cutaway side view and a plan view of the printing surface plate, FIG. 6 is a cutaway side view showing the air cutting mechanism of the paper ejecting device, FIG. 7 is a plan view of the main parts, and FIG.
The figure is a perspective view of the slider and paper ejection claw. 8...Printing surface plate, 17...Suction port, 18...Air passage, 19...Card, 22...Air valve,
25... Push-up pin, 38... Paper ejection device, 39
...First air cylinder, 40...Operation body, 43...
...Second air cylinder, 45... Paper ejection claw.

Claims (1)

[Scope of utility model registration request] A printing surface plate that sequentially moves the paper feeding position, printing position, and paper ejection position of the card, and a printing surface plate formed on the top surface of the printing surface plate and being vacuumed through an air passage in the printing surface plate and placed on the printing surface plate. A suction port that sucks and holds a placed card, an air valve interposed in the air passage, a push-up pin that is provided on the top surface of the printing surface plate and is biased to a retracted state, and the ejector. an operating body provided at the paper position and operated by a first air cylinder to close the air valve of the printing platen and to operate the push-up pin to an extended state; and a second air cylinder provided at the paper discharge position operated by the operation body. and a paper ejection claw for scraping out the card pushed up by the push-up pin from the printing platen.